Surface-gage.



L. NEUIVIANN.

SURFACE GAGE.

APPLICATION mzo NOV. 10.1916.

Patented 32111.8,1918.

WITNESS yam ATTORNEY LOUIS NEUMANN, on NEW YORK, 1v. Y., ASSIGNOR orONE-HALF r0 FRANCIS X.

' s'rnrrAivs, on NEW YORK, N. Y.

SURFACE-GAGE.

Specification of Letters Patent.

Patented Jan. 8, 19.18.

Application filed November 10, 1916. Serial No. 130,631.

To all whom it may concern 7 Be it known thatI, Louis NEUMANN, a citizenof the United States, residing at New York city, in the county of NewYork and State of New York, have invented new and useful Improvements inSurface-Gages, of which the following is a specification.

This invention relates to surface gages and particularly to that classincluding a stylus which is adapted to be arranged above the surface tobe operated upon and to be moved thereover manually and to be actuatedduring such movements so as to indicate inequalities in the surface.

Another object of the invention is to produce a device of this characterwhich can be 'eadily supported from an ordinary straight edge so thatthe latter can be elfectually advanced. against the surface to be gagedand the stylus adjusted on the straight edge and in the direction of thesurface to be gaged at the convenience of the operator and according tothe conditions of the work that is present.

Another object of the invention is to produce a surface gage which willinclude a stylus, means for effecting an approximate adjustment of thestylus with relation to the surface to be operated upon, and a secondmeans directly supporting the first means and adapted to permit veryfine and delicate adjustments to be subsequently taken in the stylus.

lVith the above and other objects in view which will appear as thenature of the inven tion is better understood, the same consists in theimproved construction and novel arillIg'GlllQlltS of parts which willhereinafter be fully described and particularly pointed out in theclaims.

In the accompanying drawings, has been illustrated, a single andpreferred form of the invention, it being, however, understood that nolimitations are necessarily made to the precise structural detailstherein exhibited, but that changes, alterations and modificationswithin the scope of the claims may be resorted to when desired.

In the drawings Figure 1 is a side view of the gage.

Fig. 2 is a plan view thereof.

Fig. 3 is a vertical section therethrough on the line 3-3 of Fig. 1.

Fig. is a perspective view of the clamp mg screw.

Fig. 5 is a longitudinal section on line '55 of Fig. 1.

The device consists of a U-shaped bracket 1, having substantiallyparallel sides 2 and 3 and a connecting end portion .1. The device isadapted to be applied to an ordinary straight edge Or square and theblade of the latter is adapted to come into the space 5, between thesides 2 and 3 of the bracket 1. A clamping screw 6, is slidably mountedin a channel 7, in the side 2, of said bracket 1, and said screw isprovided with a head 8, which plays in the space 5, whereby it isadapted to co-act with the square or straight edge for the purpose ofinsuring an operative connection between the gage and said square. Atone end the screw is provided with an adjusting nut 9, which isassociated with the bracket 1, so that the screw can be fed withrelation to the straight edge.

A rocker 10, is mounted upon the side 3, of the bracket and is providedwith a sector 11, having an arcuate toothed surface 12, which terminatesdirectly in ad *ance of the rear end of said side 3, as shown. Adjacentto the toothed surface are brackets 13-13, in which an operating screw1%, is swiveled. The threads of the screw intermesh with the teeth 12,of said rocker, and one end is provided with a manipulating knob 15. Inthis manner it is seen that the rocker can be tilted at the convenienceof the operator and very delicate and fine adjustments obtained.

The rocker has a forwardly rising arm 16, in which a stud 17, is mountedfor oscillatory movements. This stud is provided with a split end 18,through which a stylus 19 or marker is slidably mounted. The stud passesthrough a bushin 20, which is adapted to be drawn into frictionalcontact with the split portion of the stud and against the extension 16,under the action of a clamping nut 21. In this manner the stylus is heldagainst sliding movement and the stud retained against oscillatorymovement. By providing the stud an initial or approximate adjustment ofthe stylus can be obtained with relation to the work to be gaged.

The device is universally designed for the purpose of gaging allsurfaces and is admirably useful in setting up to the workmaninconsistencies or irregularities in flat work.

What is claimed as new is 1. In a surface gage, thecombination with aU-shaped bracket whose arms are spaced for the reception of a straightedge and one of which is channeled in its inner side, a screwlongitudinally movable within said channel and with its threaded endextending through the bend of the bracket and its inner end having ahead projecting into the space between said arms, and a nut threaded onsaid projecting end; of a rocker pivoted on said bracket and having anupstanding arm, means for mounting a stylus in said arm, and means forturning the rocker on its pivot.

Copies of this patent may be obtained for 2. In a surface gage, thecombination with a U-shaped bracket, and means for clamping a straightedge between the arms thereof; of a rocker pivoted on said bracket andincluding a toothed sector atone end and an upstanding arm at the otherend, a screw swiveled on the bracket and with its threads engaging theteeth of said sector, a stud mounted through said upstanding arm andsplit at its upper end and threaded at its lower end, a nat on saidthreaded end, a stylus Within the split end, and a bushing surroundingsaid stud between its split portion and said head whereby tightening ofthe nut clamps the stylus, as described.

In testimony whereof I aiiix my signature LOUIS NEUMANN;

five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

